1 /* 2 * replay-time.c 3 * 4 * Copyright (c) 2010-2015 Institute for System Programming 5 * of the Russian Academy of Sciences. 6 * 7 * This work is licensed under the terms of the GNU GPL, version 2 or later. 8 * See the COPYING file in the top-level directory. 9 * 10 */ 11 12 #include "qemu/osdep.h" 13 #include "sysemu/replay.h" 14 #include "replay-internal.h" 15 #include "qemu/error-report.h" 16 17 int64_t replay_save_clock(ReplayClockKind kind, int64_t clock, 18 int64_t raw_icount) 19 { 20 g_assert(replay_file); 21 g_assert(replay_mutex_locked()); 22 23 /* 24 * Due to the caller's locking requirements we get the icount from it 25 * instead of using replay_save_instructions(). 26 */ 27 replay_advance_current_icount(raw_icount); 28 replay_put_event(EVENT_CLOCK + kind); 29 replay_put_qword(clock); 30 31 return clock; 32 } 33 34 void replay_read_next_clock(ReplayClockKind kind) 35 { 36 unsigned int read_kind = replay_state.data_kind - EVENT_CLOCK; 37 38 assert(read_kind == kind); 39 40 int64_t clock = replay_get_qword(); 41 42 replay_check_error(); 43 replay_finish_event(); 44 45 replay_state.cached_clock[read_kind] = clock; 46 } 47 48 /*! Reads next clock event from the input. */ 49 int64_t replay_read_clock(ReplayClockKind kind) 50 { 51 int64_t ret; 52 g_assert(replay_file && replay_mutex_locked()); 53 54 replay_account_executed_instructions(); 55 56 if (replay_next_event_is(EVENT_CLOCK + kind)) { 57 replay_read_next_clock(kind); 58 } 59 ret = replay_state.cached_clock[kind]; 60 61 return ret; 62 } 63